eye can show extensive decay on radiographs. One of the reasons is remineralisation of the superficial enamel caries while the dentine is decaying underneath. This can sometimes be accredited to surface remineralisation from fluoride. Occult caries is often seen when teenagers move away from home and, for the first time, have control of their own diet. The case below demonstrates the importance...

Gafchromic XR type-R radiochromic film is a relatively new product designed for use at clinical diagnostic x-ray energies both qualitatively and quantitatively. This short note investigates the energy response characteristics of this high-sensitivity radiochromic film for both diagnostic and therapeutic x-ray energies. Results are also compared to conventional silver halide x-ray film for energ...

background: an effective method for management of large and bulky malignant tumors. this treatment modality is also known as specially fractionated radiation therapy (sfrt). in this treatment technique a grid block converted the open radiation field into a series of pencil beams. dosimetric characteristics of an external beam grid radiation field have been investigated using experimental and mo...

Lipoma of the deep lobe of the parotid gland is extremely rare. A forty-two-year-old man presented with a painless, soft, and slow-growing mass in the left preauricular area. Ultrasonography and computed tomography findings were consistent with lipoma. The patient was treated with superficial parotidectomy and total excision of the mass with preservation of the facial nerve. Histologic findings...

Mofid B1, Navabpoor M2, Alizadeh Azimi M3 1. Assistant professor, Department of Radiotherapy, Faculty of Para-Medicine, Shahid Beheshti University of medical sciences 2. Instructor, Department of Technology of radiology, Faculty of Para-Medicine, Shahid Beheshti University of medical sciences Abstract Background: Photoelectron therapy method has been usad successfully, on the body phantom...

Introduction: Head-and-neck cancer is the sixth most common cancer worldwide with the number of cases consistently increasing in developing countries. Successful development of effective, safe and cost effective nanoprobes for head-and-neck cancer targeting imaging is a big challenge. This study is aimed to develop cysteamine-folate conjugated gold nanoparticles (F-Cys-AuNPs) a...